Railway track grinder



Dec. 13, 1932. I H, E Z 1,891,173

RAILWAY TRACK GR]; NDER Filed Feb. 18, 1931 3 Sheets-Sheet 1 Dec. 13,1932.

H. PERAZZOLI RAILWAY TRACK GRINDER 3 Sheets-Sheet 2 Filed Feb. 18, 1931Dec. 13, 1932. H. PERAZZOLI RAILWAY TRACK GRINDER Filed Feb. 18, 1951 3Sheets-Sheet 3 N W 4 \\\HI H@J w 4. 4 7/7//// Patented Dec. 13, 1932UNITED HENRY PEEAZZOLI, F EHILADELIPHIA, PENNSYLVANIA RAILVTAY TRACKGRINDER Application filed February is, 1931. Serial No. 516,715.

This invention relates to new and useful improvements in high speedgrinders and more particularly in high speed railway track grinders ofthe portable type having a single abrasive wheel.

One object of the invention is to provide a grinding machine having anovel means for adjusting the vertical feed of the grinding wheel;

Another object of the invention is to provide a railway track grindingmachine hav ing means to permit the lateral adjustment of the grindingwheel.

Another object of the invention is to provide a grinding machine havingnovel means for raising the flanges of the track wheels above the railsof the track to permit the machine to be pivoted about for grindingopposite rails.

Another object of the invention is to provide a grinding machine havingmeans for facilitating removal of the machine from the vicinity of thetrack to permit the passage of a railway train, street car, or the like.

The invention further resides in certain details set forth in theannexed specification and shown in the accompanying drawings in which:

Figure 1 is a view in perspective of the grinding machine;

Fig. 2 is a sectional view on line 2-2, Fig. 1, showing the means foradjustment of the feed of the grind or abrasive wheel;

Fig. 3 is an enlarged detail in perspective of the derail'ing device topermit the pivoting of the entire machine;

Fig. 4 is a section view along line 14, Fig. 3; and

5 is a section along line 5-5, Fig. 2.

The type of grinding machine herein set forth is adaptable for use bysteam or electric railroads in removing surplus metal deposited on therails, for the purpose of leveling cupped joints, and in other specialtrack work, effected by arc welding and the like. The machine is mountedin the present instance upon three standard insulated track wheels whichrest on the rails of a standard track and comprises a single grinding orabrasive wheel. The use of a single abrasive wheel necessitates thepivoting or turning about of the entiremachine to grind opposite railsof the track, and in the past, machines of this type have causedconsiderable trouble for the operator in bringing about this change inposition. This invention provides an operable mechanism in the form of ahand lever and jack which is adapted to lift the flanges of the wheelsabove the upper face of the track rails, to permit the entire machine tobe pivoted on a rotatable joint at the base of the jack. This greatlyreduces the trouble and labor encountered in derailing and changing theposition of the grinding machine. Furthermore, in the great majority ofma- 6a chines of this type it is diflicult to remove them entirely fromthe vicinity of the track to permit the passage of trains. In thepresent case the invention provides a novel arrangement in the form of aroller, mounted in adjustable supports in the machine, whereby theoperator of the machine, by merely lifting the light end of the machine,may push it, in wheelbarrow fashion, away from the track. Certain novelfeatures are also embodied in the method of feeding the abrasive wheelonto the track rails, and in the general construction of the grindingmachine.

Referring to the drawings. the grinding machine comprises a main frameconsisting in the present instance of a pair of longitudinal beams 1, 1,spaced apart at one end by a transverse member 2. The beams 1, 1 in thepresent instance extend beyond the memher 2, and are provided withhandles 3, 3 to facilitate the moving of the grinding machine. An archedmember 4 is rigidly secured to the opposite ends of the main frame beams1, 1 and transversely with respect thereto, the said arched member 4 inthe present instance extending a substantial distance outward from bothsides of the main frame beams. The main frame is preferably braced bymembers 8 extending from the outer ends of the arch member to the mainbeams, as shown in Fig. 1.

Standard steam road insulated track wheels 5 are rigidly mounted onshafts 6 which are rotatably mounted in bearings 7,

one of said bearings 7 being suported in the transverse member 2, andthe other two of one of said bearings 7 being supported in theextremities of the arched beam 4, thus providing a three point supportfor the structure. A transverse subframe 9 formed of suitable structuralmaterial is supported upon the main frame members 1, 1 and is adapted toslide thereon by means of ball bearings 10 suitably mounted on the saidsubframe 9. A spring locking pin 11 is adapted to enter one of aplurality of holes in the subframe 9, locking the subframe in anyposition desired.

A motor and grinding wheel carrying frame 13 is carried by the subframe9. An

electric motor 14 is mounted on the rear end of the frame 13 and drivesa grinding wheel 16 beyond the outer end of the frame. The shaft 20 ofthe grinding wheel is driven from the motor shaft 15 through a flexiblecoupling 17, a pair of spiral gears 18, 18, rotatably mounted in ahousing 19, mounted on the carrying frame, 13. Suitable control boxes 49for regulating the speed of the motor 14 and the starting and stoppingthereof, may be mounted on the upper portion of the subframe 9.

The carrying frame 13 in the present instance is arranged to slidevertically on the subframe 9. The recessed portions 21, 21 of thecarrying frame 13 ride upon the vertical runner members 22, 22 of thesubframe 9. The carrying frame 13 is moved by a jack screw 23 havingthreads 24 thereon and adapted for engagement with threads 25 in abushing 26 in the supporting bracket 27 forming a part of the subframe9. The jack screw 23 is rigidly connected to the supporting frame and israised or lowered by the rotation of the bushing 26 by means of a handwheel 28 secured to the bushing. The bushing 26 is further held frommoving vertically in the supporting bracket 27 by means of a collar 29and nuts 29a.

A derailing device is mounted at the inner end of the subframe 9 andcomprises a vertical jack bar 31 which is arranged to slide in blocks 32secured to the end members 33 and 34, of the subframe 9. In the presentintance. the lower end of the vertical jack bar 31 is bent at an angleas shown and has a rotatable thrust bearing 43 secured to the under sidethereof permitting the rotation of the machine upon the plate 43a ofsaid bearing. The bar is raised and lowered by alever 38 pivoted at 38ato a cross bar 39. This lever is connected to the vertical bar by a link35. A spring engaging pin 40 is mount- 3 ed in the lower block 32 and isnormally maintained in a position to engage the aperture 41 or 42 in.the vertical bar 31, by a spring 40a. The aperture 41 is so positionedas to allow the spring pin 40 to enter the aperture when the device isin position for derailing the machine, and maintain the said device inthat position until the spring pin 40 is released. A similar aperture 42is positioned in a similar manner for maintaining the derailing devicein a raised position. On moving the hand lever 38 from the positionshown in Fig. 3 to a horizontal position, the bar 31 is forced downward,and raises the light end of the machine. This enables the operator toswing the said machine around on the thrust ball bearing 43 of the toeplate 43a.

To allow the machine to be readily removed from the track for thepassage of a railroad train or the like, a roller 47 is provided at theforward end of the machine, this roller being mounted in bearings inadjustable brackets 44, slidably mounted in guide blocks 4411 on theends of the beams 1, 1. The brackets 44 in the present instance areprovided with a plurality of apertures 45, which are adapted forengagement by spring lock pins 46.

In removing the machine from the track, the disengagement of the lockpins 46, 46 from the apertures in the brackets 44, 44, per- I.

mits the said brackets to be lowered until the roller 47 rests on tiesor road bed. The operator can then readily lift the opposite end of themachine by the handles 3, 3 and push the machine off the tracks.

The machine in the present instance is composed of high grade steelcastings and is compact and rugged in design, and while the embodimentthereof is herein set forth for the purpose of description, it will beapparent that certain modifications and changes thereto will not departfrom the spirit of the invention.

I claim:

machine comprising a frame, traction wheels supporting said frame andadapted to travel on the rails to be ground, a subframe slidably mountedon the said main frame, a supporting frame slidably mounted upon thesubframe, an abrasive wheel mounted on the said supporting frame, asource of power mounted on the supporting frame and coupled with thesaid abrasive wheel, a jack screw mounted on the said supporting framefor varying the vertical relation of the supporting frame with respectto the subframe thereby affording adjustment of the abrasive wheel withrespect to the track rails, a hand lever and jack bar mounted on thesubframe for raising the flanges of the track wheels above the trackrails to permit the machine to be turned to grind opposite rails, and aroller rotatably mounted in adjustable vertical supports mounted on themain frame for facilitating the removal of the said machine from therailway track.

A portable railway track grinding machine comprising a frame, anabrasive wheel mounted thereon, means for facilitating the CHI removalof the grinding machine upon the railway track comprising a pair ofbrackets adj acently mounted at one end of the frame and having aplurality of aligned holes therein, a roller rotatably mounted in theextremities of the said supports, and spring controlled means carried bysaid frame and engaging the holes in the supports constituting means foradjusting said supports and placing the said roller in or out ofoperative position.

3. A portable railway track grinding machine comprising a frame, a pairof traction wheels supported at one end of said frame and a third trackwheel supported at the other end of the frame, a subframe mounted on thesaid main frame and adapted to slide thereon transversely with respectto the track rails, means arranged to secure the subframe in apredetermined transverse position with respect to said rails on theframe, a supporting frame mounted on the said subframe, an abrasivewheel, mounted on the supporting frame, a source of power mounted on thesupporting frame and coupled with the abrasive wheel, means forvertically adjusting the said supporting frame with respect to thesubframe, and means carried by said subframe for raising the entiremachine a sufficient distance to raise the flanges of the track wheelsabove the track rails, to permit said machine to be pivoted to grindopposite rails.

4. A portable railway track grinding machine comprising a frame, a pairof traction wheels supported at one end of said frame and a third trackwheel supported at the other end of the frame, a subframe mounted on thesaid main frame and adapted to slide thereon transversely with respectto the track rails, means arranged to secure the subframe in apredetermined transverse position with respect to said rails on theframe, a supporting frame mounted on the said subframe, an abrasivewheel mounted on the supporting frame, a source of power mounted on thesupporting frame and coupled with the abrasive wheel, means forvertically adjusting the said supporting frame with respect to thesubframe, means carried by said subframe for raising the entire machinea suflicient distance to raise the flanges of the track wheels above thetrack rails to permit said machine to be pivoted into positions to grindopposite rails, and independently adjustable means mounted on the mainframe facilitating the removal of the grinding machine from the track.

5. A portable railway track grinding machine comprising a frame,traction wheels supporting said frame and arranged to travel on therails to be ground, a subframe slidably mounted on the main frame, asupporting frame slidably mounted on the sub-frame, an abrasive wheelmounted on said supporting frame, a source of power operativelyconnected with said abrasive wheel, means mounted on said supportingframe for varying the vertical relation of the supporting frame withrespect to the sub-frame and affording adj ustment of the abrasive wheelwith respect to P

